Mus musculus strain:C57BL/6J mice
Ontology highlight
ABSTRACT:
PROVIDER: PRJDB13127 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| DRR351136.fastq.gz | Fastqsanger.gz | |||
| DRR351137.fastq.gz | Fastqsanger.gz | |||
| DRR351138.fastq.gz | Fastqsanger.gz | |||
| DRR351139.fastq.gz | Fastqsanger.gz | |||
| DRR351140.fastq.gz | Fastqsanger.gz |
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Project description:Effect of voluntary exercise training on microRNA sequencing profile in secretory extracellular vesicles derived from skeletal muscle of mice
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Project description:We performed small RNA sequencing on extracellular vesicles isolated from bronchoalveolar lavage fluid (BALF) collected from ozone and filtered air exposed C57BL/6J mice
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Project description:Defects in homocysteine and folate metabolism are associated with increased risks for neural tube and congenital heart defects, cardiovascular disease and stroke, cancers, and neurodegeneration. In many but not all cases, dietary supplementation with folate significantly reduces the severity and incidence of these conditions. Common polymorphisms modulate these metabolic pathways and disease risks, but do not fully account for the particular birth defects and adult diseases that occur in at-risk individuals. To test whether other pathways contribute to disease pathogenesis, we analyzed global and pathway-specific changes in gene expression and levels of selected metabolites after depletion and repletion of dietary folate in two genetically distinct inbred strains of mice. Compared to the C57BL/6J strain, A/J showed greater homeostatic response to folate perturbation by retaining a higher serum folate level and minimizing global gene expression changes. Remarkably, folate perturbation led to systematic strain-specific differences only in the expression profile of the cholesterol biosynthesis pathway and translated to changes in levels of serum and liver total cholesterol. By genetically increasing serum and liver total cholesterol levels in APOE deficient mice, we modestly but significantly improved folate retention during folate depletion, suggesting an interplay between homocysteine and folate metabolism and cholesterol metabolism. Absence of measurable changes in global methylation patterns or amelioration of effects with supplementation with an alternative methyl donor suggest that dietary folate perturbations do not act through large-scale or general changes in methylation. These results suggest that homeostatic responses in cholesterol metabolism contribute to the beneficial effects of dietary folate supplementation. Keywords: time course, stress response, diet, genetic, homeostasis
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Project description:microRNAs in serum extracellular vesicles in flu-infected mice
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Project description:Arthritis was induced in C57BL/6 mice by injection of arthritogenic serum. This study aims to evaluate the transcriptomic profile of the K/BxN model of arthritis in knee joints, as well as he anti-inflammatory/tissue pro-repair effect of the intra-articular administration of neutrophil extracellular vesicles (EVs).
2024-01-01 | GSE194152 | GEO
Project description:BackgroundTranscripts can exhibit significant variation in tissue samples from inbred laboratory mice. We have designed and carried out a microarray experiment to examine transcript variation across samples from adipose, heart, kidney, and liver tissues of C57BL/6J mice and to partition variation into within-mouse and between-mouse components. Within-mouse variance captures variation due to heterogeneity of gene expression within tissues, RNA-extraction, and array processing. Between-mouse variance reflects differences in transcript abundance between genetically identical mice.ResultsThe nature and extent of transcript variation differs across tissues. Adipose has the largest total variance and the largest within-mouse variance. Liver has the smallest total variance, but it has the most between-mouse variance. Genes with high variability can be classified into groups with correlated patterns of expression that are enriched for specific biological functions. Variation between mice is associated with circadian rhythm, growth hormone signaling, immune response, androgen regulation, lipid metabolism, and the extracellular matrix. Genes showing correlated patterns of within-mouse variation are also associated with biological functions that largely reflect heterogeneity of cell types within tissues.ConclusionsGenetically identical mice can experience different individual outcomes for medically important traits. Variation in gene expression observed between genetically identical mice can identify functional classes of genes that are likely to vary in the absence of experimental perturbations, can inform experimental design decisions, and provides a baseline for the interpretation of gene expression data in interventional studies. The extent of transcript variation among genetically identical mice underscores the importance of stochastic and micro-environmental factors and their phenotypic consequences.
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Project description:Tarsal joint abnormalities have been observed in aged male mice on a C57BL background. This joint disease consists of calcaneal displacement, inflammation, and proliferation of cartilage and connective tissue, that can progress to ankylosis of the joint. While tarsal pathology has been described previously in C57BL/6N substrains, as well as in STR/ort and B10.BR strain, no current literature describes this disease occurring in C57BL/6J mice. More importantly the behavioral features that may result from such a change to the joint have yet to be evaluated. This condition was observed in older male mice of the C57BL/6J lineage, around the age of 20 weeks or older, at a frequency of 1% of the population. To assess potential phenotypic sequela, this study sought to evaluate body weight, frailty assessment, home cage wheel running, dynamic weight bearing, and mechanical allodynia with and without the presence of pain relief with morphine. Overall mice with tarsal injuries had significantly higher frailty scores (p< 0.05) and weighed less (p<0.01) compared to unaffected mice. Affected mice had greater overall touch sensitivity (p<0.05) and they placed more weight on their forelimbs (p<0.01) compared to their hind limbs. Lastly, when housed with a running wheel, affected mice ran for a shorter length of time (p<0.01) but tended to run a greater distance within the time they did run (p<0.01) compared to unaffected mice. When tested just after being given morphine, the affected mice performed more similarly to unaffected mice, suggesting there is a pain sensation to this disease process. This highlights the importance of further characterizing inbred mouse mutations, as they may impact research programs or specific study goals.
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Project description:Study to examine the effect of a demanding 15 minute whole hindlimb isometric contraction protocol in vivo on changes in gene expression, 4 hours post-contraction. Keywords = skeletal muscle Keywords = isometric contractions
2010-06-06 | E-GEOD-1679 | biostudies-arrayexpress
Project description:We have demonstrated that the circulating extracellular vesicles (EVs) are essential to the beneficial effect of young serum on the skeletal muscle regenerative cascade. Here, we show that infusions of young serum significantly improved age-associated memory deficits, and the effect was abolished after serum depletion of EVs. RNA-seq analysis of the choroid plexus demonstrated EV-mediated effects on genes involved in barrier function and trans-barrier transport. Comparing the differentially expressed genes to the recently published chronological aging clocks revealed a reversal of transcriptomic aging in the choroid plexus. The hippocampal transcriptome demonstrated a significant upregulation of the anti-aging gene Klotho following young serum treatment and an abrogated effect after EV depletion. Subsequent transcriptomic profiling of Klotho knockout and heterozygous mice showed downregulation of genes associated with transport, exocytosis, and lipid transport, while upregulated genes were associated with activated microglia. The results of our study indicate the significance of EVs as vehicles to deliver signals from the periphery to brain and the importance of Klotho in maintaining brain homeostasis.
2023-08-30 | GSE234667 | GEO
Project description: Not available
| S-BSST1147 | biostudies-other